Vacuum cleaner



FIG. 1 is a perspective view showing the top, front and side of a vacuum cleaner according to our new design; and

FIG. 2 is a side elevational view of the vacuum cleaner shown in FIG. 1, and;

FIG. 3 is a rear end elevational view of the vacuum cleaner shown in FIGS. 1 and 2. 

The ornamental design for a vacuum cleaner, as shown. 